diff --git a/coal-crafter.lua b/coal-crafter.lua
index 19bd284..ceb03bf 100644
--- a/coal-crafter.lua
+++ b/coal-crafter.lua
@@ -1,6 +1,6 @@
 local turtleUtils = require('libs/turtle-utils')
 
-local NB_NEEDED_COAL = 256
+local NB_NEEDED_COAL = 64 * 2
 local WAIT_INVENTORY_TIME = 3
 local IDLE_TIME = 30
 local IDLE_TIME_ENOUGH_COAL = 120